[EN] LIGAND-CONTROLLED C(SP3)-H ARYLATION AND OLEFINATION IN SYNTHESIS OF UNNATURAL CHIRAL ALPHA AMINO ACIDS [FR] ARYLATION COMMANDÉE PAR LIGAND DE C(SP3)-H ET OLÉFINATION UTILISABLES DANS LE CADRE DE LA SYNTHÈSE D'ACIDES ALPHA-AMINÉS CHIRAUX NON NATURELS
Functionalized Polymer-Supported Pyridine Ligands for Palladium-Catalyzed C(sp<sup>3</sup>)–H Arylation
作者:Li-Chen Lee、Jian He、Jin-Quan Yu、Christopher W. Jones
DOI:10.1021/acscatal.6b01774
日期:2016.8.5
transition-metal catalysts for C(sp3)–H bond activation is a current central challenge. One of us previously developed an uncommon example of a homogeneouscatalyst that performs controlled C(sp3)–H arylation using pyridine derivatives as ligands, along with Pd [Science, 2014, 343, 1216–1220]. In this work, we report a functionalizable and tunable polymer support used in the immobilization of pyridine derivatives
Selective C(<i>sp</i>
<sup>3</sup>
)-H Monoarylation Catalyzed by a Covalently Cross-Linked Reverse Micelle-Supported Palladium Catalyst
作者:Caroline B. Hoyt、Li-Chen Lee、Jian He、Jin-Quan Yu、Christopher W. Jones
DOI:10.1002/adsc.201700707
日期:2017.10.25
In this work, we illustrate the performance of a solvated micelle‐supported ligand as a platform for coordination with palladium for C–H arylation. The micelle‐supported ligand is one of the first applications of a micelle‐supported ligand for C–H arylation, and provides a tunable support for future elaboration. The use of a spatially constrained system promoted selectivity trends influenced by both
Ligand-Enabled Cross-Coupling of C(sp<sup>3</sup>)–H Bonds with Arylsilanes
作者:Jian He、Ryosuke Takise、Haiyan Fu、Jin-Quan Yu
DOI:10.1021/jacs.5b00890
日期:2015.4.15
Pd(II)-catalyzed cross-coupling of C(sp(3))-H bonds with organosilicon coupling partners has been achieved for the first time. The use of a newly developed quinoline-based ligand is essential for the cross-coupling reactions to proceed.